Three-wheeled vehicle frame



FIG. 1 is a top, front isometric view of a three wheeled vehicle frame showing our new design;

FIG. 2 is a bottom, rear isometric view thereof;

FIG. 3 is a side elevational view thereof;

FIG. 4 is a front elevational view thereof; and

FIG. 5 is a rear elevational view thereof. 

The ornamental design for a three-wheeled vehicle frame, substantially as shown and described. 